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https://github.com/brain-hackers/u-boot-brain
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019bc6259d
p2371-2180 has two PCI ports; a regular x4 slot and a x1 M.2 slot. This patch adds the relevant DT to enable the PCI controller and configure the XUSB padctl pin muxing, and code to turn on the PCI power and enable PCI features in U-Boot. I have only tested the x4 slot. Signed-off-by: Stephen Warren <swarren@nvidia.com> Signed-off-by: Tom Warren <twarren@nvidia.com>
82 lines
1.9 KiB
C
82 lines
1.9 KiB
C
/*
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* (C) Copyright 2013-2015
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* NVIDIA Corporation <www.nvidia.com>
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*
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* SPDX-License-Identifier: GPL-2.0+
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*/
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#include <common.h>
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#include <netdev.h>
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#include <i2c.h>
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#include <asm/arch/gpio.h>
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#include <asm/arch/pinmux.h>
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#include "../p2571/max77620_init.h"
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#include "pinmux-config-p2371-2180.h"
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void pin_mux_mmc(void)
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{
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struct udevice *dev;
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uchar val;
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int ret;
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/* Turn on MAX77620 LDO2 to 3.3V for SD card power */
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debug("%s: Set LDO2 for VDDIO_SDMMC_AP power to 3.3V\n", __func__);
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ret = i2c_get_chip_for_busnum(0, MAX77620_I2C_ADDR_7BIT, 1, &dev);
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if (ret) {
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printf("%s: Cannot find MAX77620 I2C chip\n", __func__);
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return;
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}
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/* 0xF2 for 3.3v, enabled: bit7:6 = 11 = enable, bit5:0 = voltage */
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val = 0xF2;
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ret = dm_i2c_write(dev, MAX77620_CNFG1_L2_REG, &val, 1);
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if (ret)
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printf("i2c_write 0 0x3c 0x27 failed: %d\n", ret);
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}
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/*
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* Routine: pinmux_init
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* Description: Do individual peripheral pinmux configs
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*/
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void pinmux_init(void)
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{
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pinmux_clear_tristate_input_clamping();
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gpio_config_table(p2371_2180_gpio_inits,
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ARRAY_SIZE(p2371_2180_gpio_inits));
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pinmux_config_pingrp_table(p2371_2180_pingrps,
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ARRAY_SIZE(p2371_2180_pingrps));
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pinmux_config_drvgrp_table(p2371_2180_drvgrps,
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ARRAY_SIZE(p2371_2180_drvgrps));
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}
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#ifdef CONFIG_PCI_TEGRA
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int tegra_pcie_board_init(void)
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{
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struct udevice *dev;
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uchar val;
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int ret;
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/* Turn on MAX77620 LDO1 to 1.05V for PEX power */
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debug("%s: Set LDO1 for PEX power to 1.05V\n", __func__);
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ret = i2c_get_chip_for_busnum(0, MAX77620_I2C_ADDR_7BIT, 1, &dev);
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if (ret) {
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printf("%s: Cannot find MAX77620 I2C chip\n", __func__);
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return -1;
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}
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/* 0xCA for 1.05v, enabled: bit7:6 = 11 = enable, bit5:0 = voltage */
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val = 0xCA;
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ret = dm_i2c_write(dev, MAX77620_CNFG1_L1_REG, &val, 1);
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if (ret)
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printf("i2c_write 0 0x3c 0x25 failed: %d\n", ret);
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return 0;
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}
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int board_eth_init(bd_t *bis)
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{
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return pci_eth_init(bis);
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}
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#endif /* PCI */
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